<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../js/vue.js"></script>
</head>
<body>
    <div id="app">
        <p>{{msg}}</p>
    </div>
</body> 
<script type="text/javascript">
    new Vue({
        el:'#app',
        data:{
            msg:'hello world'
        },
    })
</script>
</html>